Global Patent Index - EP 0948213 A3

EP 0948213 A3 20010829 - Moving pictures decompression device and method thereof

Title (en)

Moving pictures decompression device and method thereof

Title (de)

Vorrichtung und Verfahren zur Bewegtbilddekompression

Title (fr)

Dispositif et procédé de décompression d'images animées

Publication

EP 0948213 A3 20010829 (EN)

Application

EP 99250102 A 19990331

Priority

JP 8656398 A 19980331

Abstract (en)

[origin: EP0948213A2] A moving pictures decompression device and method thereof enable deterioration to be prevented regarding processing speed of a decode software when a moving pictures decompression is implemented. The moving pictures decompression device is provided with a CPU 1 in which a cache memory device is integrated, an internal memory device 2, a display device 3, an external storage device 4, and a decode software operating in accordance with the CPU 1. A first measure which combines to be implemented a variable length code decoding, an inverse quantization, and an inverse DCT (Discrete Cosine Transformation) regarding a plurality of macro blocks, and a second measure which combines to be implemented a motion compensation processing regarding a plurality of macro blocks, are provided. Thus it is possible to prevent lowering of the processing speed of a decode software when the moving pictures decompression is implemented. <IMAGE>

IPC 1-7

H04N 7/36; H04N 7/50

IPC 8 full level

H04N 19/50 (2014.01); H04N 19/42 (2014.01); H04N 19/423 (2014.01); H04N 19/44 (2014.01); H04N 19/503 (2014.01); H04N 19/51 (2014.01); H04N 19/60 (2014.01); H04N 19/61 (2014.01); H04N 19/625 (2014.01); H04N 19/91 (2014.01)

CPC (source: EP)

H04N 19/42 (2014.11); H04N 19/51 (2014.11); H04N 19/61 (2014.11)

Citation (search report)

  • [X] EP 0614317 A2 19940907 - SONY CORP [JP]
  • [XA] US 5701160 A 19971223 - KIMURA JUNICHI [JP], et al
  • [A] EP 0660614 A1 19950628 - SONY CORP [JP]
  • [E] WO 9916252 A1 19990401 - SONY ELECTRONICS INC [US]
  • [XA] FREIMANN A ET AL: "MAPPING OF VIDEO DECODER SOFTWARE ON A VLIW DSP MULTIPROCESSOR", PROCEEDINGS OF THE SPIE, 29 January 1998 (1998-01-29), XP000981893
  • [XA] LEE C L: "Parallel implementation of motion-compensation for HDTV video decoder", ISCE '97. PROCEEDINGS OF 1997 IEEE INTERNATIONAL SYMPOSIUM ON CONSUMER ELECTRONICS (CAT. NO.97TH8348), ISCE '97. PROCEEDINGS OF 1997 IEEE INTERNATIONAL SYMPOSIUM ON CONSUMER ELECTRONICS, SINGAPORE, 2-4 DEC. 1997, 1997, New York, NY, USA, IEEE, USA, pages 51 - 54, XP000983063, ISBN: 0-7803-4371-9
  • [PX] MURATA ET AL: "Fast 2D IDCT Implementation with Multimedia Instructions for a Software MPEG2 Decoder", IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING,US,NEW YORK, NY: IEEE, vol. CONF. 23, 12 May 1998 (1998-05-12), pages 3105 - 3108, XP002130031, ISBN: 0-7803-4429-4
  • [A] CHANG K H ET AL: "AN EXPERIMENTAL DIGITAL HDTV VIDEO DECODER SYSTEM", IBC'94. INTERNATIONAL BROADCASTING CONVENTION 1994 (CONF. PUBL. NO.397), AMSTERDAM, NETHERLANDS, 16 September 1994 (1994-09-16) - 20 September 1994 (1994-09-20), London, UK, IEE, UK, pages 70 - 75, XP000986565
  • [A] NADEHARA K ET AL: "Real-time software MPEG-1 video decoder design for low-cost, low-power applications", VLSI SIGNAL PROCESSING, IX (CAT. NO.96TH8156), VLSI SIGNAL PROCESSING, IX, SAN FRANCISCO, CA, USA, 30 OCT.-1 NOV. 1996, 1996, New York, NY, USA, IEEE, USA, pages 438 - 447, XP000983062, ISBN: 0-7803-3134-6

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

EP 0948213 A2 19991006; EP 0948213 A3 20010829; CA 2267505 A1 19990930; JP H11285004 A 19991015

DOCDB simple family (application)

EP 99250102 A 19990331; CA 2267505 A 19990330; JP 8656398 A 19980331